22lr has been know not to penetrate a leather jacket. Actually if you do an open records report in the city of Atlanta for a certain criminal case my real name shows up as the attending Paramedic. 19y/o male shot in the forehead with a 22lr pistol. No outward signs of trauma other than a bruise in the middle of his forehead. Perp was apprehended 30 mins later with the pistol. 22lr is notorious for being a non-penetrating round. For oy to say any different proves your ignorance of firearms and their components. Which makes your a prime candidate to legislate against them, Congrats!